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Summary of Contents for Alto ? MICtube
- Page 1 User's Manual MICtube STEREO TUBE PREAMP www.altoproaudio.com Version 2.0 Dec. 2002 English...
- Page 2 SAFETY RELATED SYMBOLS External Connection CAUTION Always use proper ready-made insulated RISK OF ELECTRIC SHOCK DO NOT OPEN mains cabling (power cord). Failure to do This symbol, wherever used, alerts so could result in shock/death or fire. If you to the presence of un-insulated in doubt, seek advice, from a registered and dangerous voltages within the electrician.
- Page 3 Do not install this product near any direct heat source. Do not block areas of ventilation. Failure to do so could result in fire. Keep product away from naked flames. IMPORTANT SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these instructions. Do not discard. Heed all warnings.
- Page 4 Preface Dear Customer, Thanks for choosing LTO Stereo Tube Preamplifier and thanks for choosing one of the results of LTO AUDIO TEAM job and researches. For our LTO AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say...our obsession! We have been designing professional audio products for a long time in cooperation with some of the major brands in the world in the audio field.
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Page 5: Table Of Contents
TABLE OF CONTENT 1. INTRODUCTION ....................5 2. FEATURE LIST ....................5 3. CONTROL ELEMENTS .................5 3.1 The Front Panel a. Guidepost of The Front Panel b. Supplementary Descriptions 3.2 The Rear Panel a. Power Supply Connection b. Analogue Inputs/Outputs 4. INSTALLATION & CONNECTION..............8 4.1 Mains Connection 4.2 Audio Connection a. -
Page 6: Introduction
1. INTRODUCTION Thank you very much for expressing your confidence in LTO products by purchasing MICtube Stereo Tube Preamplifier. With the MICtube you have acquired an extremely musical and flexible Stereo Microphone Preamplifier which is based on many years of experience and findings in amplifier technology and is used through the world in renowned studios, sound reinforcement systems as well as in broadcast and televi- sion studios. -
Page 7: Guidepost Of The Front Panel
a. Guidepost of the front panel Power LED CHANNEL 1 Output Level Display LED CHANNEL 2 Output Level Display LED Phantom Power Switch (5)(6) Phase Reverse Switch (7)(8) 20dB PAD (9)(10) Combination Microphone (XLR) and Instrument (1/4 inch) input (11)(13) Input Gain Control (0 to 30 dB) (12)(14) Drive Control (0 to 40 dB) b. -
Page 8: The Rear Panel
-10dBV ) or professional level (+4dbu). When the gain is too low, the tube effect becomes less audible and the S/N (Signal to Noise) ratio deteriorates. Generally, Dynamic mics and instruments without preamps will require more gain than con- denser mics and instruments that have a built-in preamp. If you should require more signal out of the preamp for a hotter recording level, cranking up the gain should provide all the signal that you'll need. -
Page 9: Installation & Connection
4. INSTALLATION & CONNECTION: 4.1 Mains Connection - Please ensure that the LTO MICtube Stereo Microphone Preamplifier is connected to the correct supply voltage before operating this unit. - Only use the 18VAC AC/AC Adaptor provided by LTO. 4.2 Audio onnection MICtube Stereo Tube Preamp presents with balanced XLR connectors and 1/4"... -
Page 10: Rack Mounting
Balanced Ring Ring SLEEVE RING TIP TIP RING SLEEVE Sleeve Sleeve Ring TIP RING SLEEVE Sleeve Unbalanced Ring Sleeve TIP RING SLEEVE Sleeve TIP SLEEVE Cent e r Screen Sleeve Sleeve TIP SLEEVE SLEEVE TIP Ring Ring TIP RING SLEEVE SLEEVE RING TIP Sleeve Sleeve... -
Page 11: The Mictube As A Direct-Injection Ox (Di Box) B
On the output side, which may damage subsequent devices, so you should turn down all the level controls beforehand, or you can press the 20dB Pad (7/8) to attenuate the incoming signal level about 20dB, then hook up a microphone to the XLR and 1/4"... -
Page 12: Technical Specifications
6. TECHNICAL SPECIFICATIONS 6.1 Block Diagram... -
Page 13: Specifications
6.2 Specifications Input XLR Impedance 5K Ohm 1/4" High Z 1M Ohm Connectors Neutrik Combo Output XLR Balanced 100 Ohms 1/4" Unbalanced 100 Ohms Panel Controls Tube Drive 0dB to +40dB Gain 0dB to +30dB Phase Reverse 20dB Pad +48V Phantom Power Performance THD + Noise <0.5%... -
Page 14: Warranty
7. WARRANTY 1. WARRANTY REGISTRATION CARD To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within 10 days of the Purchase Date. All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of the sales status, so as to purport a more effective and efficient after-sales warranty service. - Page 15 3.5 In no event shall be liable for any incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you. 3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also have other statutory rights that may vary from state to state.
- Page 16 Tel: 886-4-22313737 email: info@altomobile.com Fax: 886-4-22346757 All rights reserved to ALTO Mobile. Due to continued development in response to customer feedback, product features, specifications and/or internal/external design may be changed without prior notice. No photocopying, translation or reproduction of any part of this user manual is allowed without prior written permission.Copyright...
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